Oscilloscope Input Connections; Measure Unknown Signals Using The Auto-Set Feature; Auto Zero The Horizontal Trigger And Trigger Level Position; Automatic Measurement Ranging - Extech Instruments MS420 User Manual

O
SCILLOSCOPE
The Oscilloscope has two (2) signal inputs (located on the lower right side) for CH1
and CH2 measurements.
Isolated inputs allow for independent floating measurements between Multimeter and
Scope functions.
M U
EASURE NKNOWN
The Auto-Set feature allows the Oscilloscope to measure and display unknown
signals automatically. This function optimizes position, range, time-base, and
triggering. It also assures a stable display of virtually any waveform. Auto Range is
especially useful for quickly checking several signals.
To enable the Auto-Set feature, perform the following steps:
1. Connect the test probe to the circuit or device under test.
2. Press the AUTO SET key; the test signals will appear on the screen.
A Z H
UTO ERO THE ORIZONTAL
To configure the instrument so that the horizontal trigger and the trigger level position
automatically return to zero.
1. Press the V key; the horizontal trigger position will automatically return to zero
2. Press the R key; the trigger level position will automatically return to zero
A M
UTOMATIC EASUREMENT
The Oscilloscope offers five (5) ranges that adjust automatically as measurements
are taken. Two numeric readings can be displayed: MEAS SET1 and MEAS SET2
(selectable independently); the measurements can be performed on the CH1 or CH2
waveform inputs.
To choose a frequency for CH1, perform the following procedure:
Press the MENU key; the function menu will appear on the right side of the
1.
screen.
Press MENU ▲ or MENU ▼ to select MEAS SET 1. Five selectable options
2.
will then be visible at the bottom of the screen.
I C
NPUT ONNECTIONS
S
IGNALS USING THE
T
RIGGER AND
R
ANGING
19
A -S F
UTO ET EATURE
T L
RIGGER EVEL
P
OSITION
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